Depression Sensitivity to cold temperature Frequent, heavy periods Joint and muscle pain. Updated on: Thyroid Gland Function Tests).
Your thyroid gland is a small gland, normally weighing less than one ounce, located in the front of the neck. It is made up of two halves, called lobes, that lie along the windpipe (trachea) and are joined together by a narrow band of thyroid tissue, known as the isthmus.
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Sources Schmidt R, Lang F, Heckmann M. Physiologie des Menschen: mit Pathophysiologie. Heidelberg: Springer. 2011. Menche N. Biologie Anatomie Physiologie: mit Zugang. München: Urban Fischer/ Elsevier GmbH. 2012. Psychrembel W. Klinisches Wörterbuch.
This is called underactive thyroid ( hypothyroidism ) and can either be genetic or develop in the course of life. There can be many different causes for an underactive thyroid. At our latitude (in Germany one reason might be a lack of iodine.
The outer capsule is connected to the voice box muscles and to many important vessels and nerves. There is loose connective tissue between the inner and the outer capsule, so that the thyroid can move and change its position when we swallow.
The thyroid (Latin: glandula thyreoidea) is a vitally important hormonal gland that plays a major role in the metabolism, growth and maturation of the human body. It helps to regulate many body functions by constantly releasing a steady amount of hormones into the bloodstream.
The pituitary gland itself is regulated by another gland, known as the hypothalamus (shown in the picture above in light blue). The hypothalamus is part of the brain and produces TSH Releasing Hormone (TRH) which tells the pituitary gland to stimulate the thyroid gland (release TSH).
If T3 and T4 levels are high, you may have a rapid heart rate and diarrhea/weight loss. Listed below are other symptoms of too much T3 and T4 in your body ( hyperthyroidism Anxiety Irritability or moodiness Nervousness, hyperactivity.
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Berlin: De Gruyter. 2014. IQWiG health information is written with the aim of helping people understand the advantages and disadvantages of the main treatment options and health care services. Because IQWiG is a German institute, some of the information provided here is specific to the German health care system.
The thyroid gland is under the control of the pituitary gland, a small gland the size of a peanut at the base of the brain (shown here in orange). When the level of thyroid hormones (T3 T4) drops too low, the pituitary gland produces Thyroid Stimulating Hormone (TSH) which stimulates the thyroid gland to produce.
If the thyroid becomes a lot bigger, the tissue expands downward due to the lack of space. This can sometimes lead to a constriction of the windpipe or to difficulties breathing.
Getting enough iodine through your diet is therefore important for normal thyroid function. A condition called Hashimoto's thyroiditis, a chronic inflammation of the thyroid, can also lead to underactivity. The use of certain medications can also affect the production of thyroid hormones.